1.1 Flashcards
What is a network topology?
A network topology refers to the physical or logical layout of a network.
Define LAN.
LAN stands for Local Area Network. It is a network that spans a small geographic area, such as an office or building.
Define WAN.
WAN stands for Wide Area Network. It is a network that covers a large geographic area, such as multiple cities or countries.
What is the OSI model?
The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes network functions into seven layers.
What is the Physical layer in the OSI model responsible for?
The Physical layer deals with the physical transmission of data over the network.
Define the Data Link layer.
The Data Link layer provides error-free transfer of data between adjacent network nodes.
What does the Network layer handle in the OSI model?
The Network layer handles logical addressing and routing of data packets.
Explain the Transport layer.
The Transport layer ensures reliable and efficient data delivery between end-to-end connections.
Define the Session layer.
The Session layer establishes, maintains, and terminates connections between applications.
What is data encapsulation?
Data encapsulation is the process of adding headers (and sometimes trailers) to data at each layer of the OSI model as it moves down the stack.
What is an Ethernet header?
An Ethernet header is the header added to data at the Data Link Layer (Layer 2) in Ethernet networks.
Define the IP header.
The IP header is the header added to data at the Network Layer (Layer 3) in IP-based networks.
What are TCP/UDP headers?
TCP/UDP headers are headers added at the Transport Layer (Layer 4) in TCP/IP-based networks.
Explain TCP flags.
TCP flags are control bits in the TCP header that indicate the status of a TCP connection or the purpose of a TCP segment.
Define payload.
The payload refers to the actual data being transmitted, excluding the headers and other control information.
